Roller bearing



March 18, 1930. w. F. BERGER ET AL ROLLER BEARING Filed April 10, 1928 INVENTo @if wy ATTORNEY.

Patented Mar. 18, 1930 WILLIAM F. BERGER AND JOI-IN A. BERGER, OIE CANILON,` OHIOy ROLLER BEARING Application filed April 10,

This invention relates to roller bearings. One obj ect of the invention is to provide a bearing especially adapted for use in connection with cranks andcrank rods or pitmen, especially in high speed motors such as automobile motors, to compensate for the' thrust and to eliminate all play by the provision of a bearing, of the roller type, which may be easily installed on the crank pin and l0 within the crank rod boxing and which will permit of ready renewal of the rollers when necessary.

Other objects will become apparent and a full and complete understanding of the invention may be obtained from a careful conn sideration of the following detailed description, taken in connection with the accompanying drawing forming a part of this specification; it being understood that while the drawing shows a practical form of the invention, the latter is not to be coniined to strict conformity with the showing thereof, but may be changed or modified, so long as such changes or modifications mark nomaterial departure from the salient features of the invention, as specifically brought out in the appended claims.

In the drawing, in which similar reference characters designate corresponding 3o parts throughout the several figures Figure l is a side elevation of an automo-V bile crank arm or pitman, having the improved bearing installed therein.

Figure 2 is a horizontal section through the same.

Figure 3 is a vertical section thereof.

Figure 4 is a plan view of the sleeve or bushing used on the crank pin, and

Figure 5 is a detailed horizontal section 4 through the outer cup or bushing.

Vhile we have elected to show our improved bearing in connection with a crank and a crank and crank rod or pitman of the above described type it is to be understood C that the invention is equally adaptable for use in other connections where smooth and accurate running of the bearing parts is re quired and where all lateral play is to be eliminated.

Referring more particularly to the draw- 192s. serial No. 268,895. ,l

ing, l indicates a crank rod or pitman of aV '.5 well-known type, having at itsreduced, upper end, the usual eye for connection with a piston pin (not shown) and being enlarged at its lower end and provided with a semicircular upper bearing member 2 and a cor-f respondingly shaped lower member 3 -coact ing therewith in the usual manner and adapt-Y ed to be held together by bolts 4.

The members 2' and 3 are each provided K with alined semi-circular bores of relatively large diameter and each-having an annular groove or seat 3ZL formed therein, the ends of which are spaced from the sides of the 'mem-` v bers for a purpose to be described. The interior walls of the upper and lower members are normally spaced from the crank pini 5, which may be of the usual construction forming a part of the crank arms 6--6.'

lThe crank pin 5 is provided with a circumferential seat on which'are placed seinicircular bushing members 7 each provided with apertures for the reception of the ends'of pins 8 passing through the crank pin. as clearly shown in Figure 2, to cause the bushing to positively turn with the crank pin. Seated withinthe annular groove or seat 3a is a pair of semi-circular cup members 9 which are thus prevented from lateral movement by contacting with the end walls of the groove and which are further secured in position by means of pins 10y anchored within the upper and lowerV members 2 and 3 respectively, and having their projecting ends iitf ting in suitable recesses in the semi-circular cup members 9. The bushing members 7 which, when applied to the crank pin, may be termed a cone member, are each provided with an outstanding, centrally-disposed ange 11, and vterminal anges l1, and the abutting edges of the sections comprising the cone are arranged at opposite angles as indicated at l2 in Figure 4 of the drawing, for the purpose of more readily permitting the passage of antifriction rollers, about tol be described, and for the same reason the outer, or cup members 9 have their abutting edges arranged at opposite angles, as shown atl?) V in Figure 5 of the drawing.v f

Twin steel roller 14 are employed to trav- 10o erse the surface of the cone member at each side of the central, outstanding flange ll and to abut at their outer ends against the terminal flanges 11a, and as the rollers are j oiiied by an integrally-formed, reduced portionrl5, it Will be seen that the flanges 1l and lla will prevent the rollers from moving transversely of the bearing, While they contact at their inner radial points upon the cone member and at their outer radial'fpoint's againstv the cup member. Y l Y v In order to insure t-he proper spaced relation between the rollers at all times,y they are provided in their ends with seats or sockets' 16, inte'whichfit pins or trunniens` lwvhich areY carried., Yin. Yproper spacedY relation, by mea-ns of substantially semi-circular rings 18 held a proper distanceapart by tie rods 19 interposed between certain ofthe rollers and suitably Vshouldered and riveted, or otherwise connected tothe ring mein-bers in a manner to perm-it the rol-lerste .freely revolve. I v

These semicircul'ar ring; members consti-- tute a cage: for causing the rollersto remain truly parallel with the longitudinal axis of 'the crank pin 5V` andto cause the same to travel the spacefbetweenthe cup andthe conev `members Without binding on the flanges lil and llt'. s A

The cup.y and Vcene, members, itshouldA Ybe stated, are formed of harder steel than the roll-ers, to' compensate; for any Wear, andi-t Will be seen that the entire device, 'because of thepsenii-circu-lar formation'of the sections of the inner bushingpaslwell as the sections ofthe; outer cup member, may be.Y readilyl positioned in theirV respective seats, and that the rollers may Valso be readily placed in opera-tive position therebetween, byV rea-son of, the fact that they are carried by semi-sirenlar ring sections which areheld together to prevent their lateral movement, the entire series; of4 rollersl being likewise guided and held' against llateralmovementby theV flanges l1.. and lla; An additional ,advantage cf the.

` structure disclosed isthe method of forming the abutting edges ofrboth the inner and outer roller face members, wherein the angularly disposed abuttingedges Will causeetherollersviding means for'holding the rollers in' trueto pass'over thefjoint Without binding er being retarded thereby, in an obvious manner. y

From the foregoing'it will be seen'l that simple means for reducing the'v friction be-- tween cranks and cran-lr'pins 'or 'in similar locations in high speedmechanism has been provided, which may be easily installed, and which maybe readily replaced when Worn orf broken, the particular construction proa-linement and being of a strong and durable nature to withstand .the strain toy which such v devices; are; subjected in use;

WVhat is claimed L an antirfriction bearingfor cranks and connecting rods, a two-part bearing, each part formed with an internal recess'to receive a cup-shaped segmental member seated in said recesses, having their ends adjacent to the end Walls of. the recesses, and keyed against rotation, a crank-pin, segmental bushings keyed to the cranlnpin to rotate therewith, spaced from the segmental cup-shaped members and formed externally With end flanges and a centrally disposed flange, twinlroll-ers disposed between the' segmental bushand ,connecting rods ativ'oart bearing eachl CB 7 to?,

part formed with an internalrecess to receive a'cup-shaped segmental member Cupshaped segmental members seated in said'- recesses, having their ends adjacent tothe end' Walls of the recesses, and keyed against rotation, a crank-pin, segmental bushings keyed to the Vcrank-pin to rotate therewith, spaced from the.- segmental cup-,shaped 'members' and fori'ned externally Vwith end flanges. and aV centrally disposed flange, twin-rollers disj- -posed between the segmental' bushings and'V cup-shaped members in rolling Contact' With the bushings and cup-shaped members, the.

ends of the rollers being disposed forengagement 'With side faces of the end and centrally,V

disposed flanges ofv the` bushing,v rings upon Which the rollers are rotatably mounted, said rings being` tied one tothe other andv disposed.

to Contact With the peripheralfaces of the end flanges of the ,segmental bushings 5^ Vthe adj aceiitv edges of the segments ofthe bushings and adjacent edges ofthe cup-shaped members being disposedat oblique angles eX- tendingy longitudinally thereof, thev angle of. one being at an opposite angle to the other;

In testimony whereof We affix our signa tures. y

WILlilAlVll F. j BERGER.. JOHN A.v BERGER. 

